| Creek County | |
| Crenarchaeota | |
| Crenshaw County | |
| Cressida | |
| Creuse | |
| Crimmitschau | |
| Crips | |
| Crisp County | |
| Crittenden County | |
| Crockett County | |
| Crook County | |
| Crosby County | |
| Cross County | |
| Crowfoot | |
| Crowley County | |
| Crow Wing County | |
| C sharp | |
| Culberson County | |
| Cullman County | |
| Culpeper County | |
| Cumbarg | |
| Cumberland County | |
| Cuming County | |
| Cupid | |
| Curitiba | |
| Currituck County | |
| Curry County | |
| Custer County | |
| Cuxhoben | |
| Cuyahoga County | |
| Cyllene | |
| Częstochowa | |
| Daag | |
| daaglang | |
| daagsöver | |
| Daak | |
| daal | |
| daalfallen | |
| daalgahn | |
| Daam | |
| Däänmark | |
| Däänsch | |
| däänsch | |
| Däänsche Spraak | |
| Daat f | |
| Dąbrowa Górnicza | |
| dacht | |
| Dack | |
| Dackfink | |
| Dack n | |
| Plattdüütsch |